- #1

DODGEVIPER13

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## Homework Statement

Write a Matlab function to compute and plot real and reactive power consumed (or

supplied) by a known impedance (the value of complex impedance should be used as the function’s input) as a function of either current or voltage (use a character: V or I as a second input) for a predefined range of 0-200 V or 0-10 A. Your function must report the impedance value in the plot title. Both, real and reactive powers should be plotted on the same axes. Verify functionality of your module for 300+j100 Ω and 100-j100 Ω impedances. Plot the power both

vs. voltage and current (total of four separate graphs).

## Homework Equations

## The Attempt at a Solution

function[Real,Reactive]=Compute_Power_Real_Reactive(impedance,V)

I=V/abs(impedance);

theta=atan(imag(impedance)/real(impedance));

P=V*I*cos(theta);

Q=V*I*sin(theta);

disp(P);

disp(Q);

end

This is my code so far this is what I get:

>> Compute_Power_Real_Reactive(300+100i,1:50:200)

? Error using ==> mtimes

Inner matrix dimensions must agree.

Error in ==> Compute_Power_Real_Reactive at 7

P=V*I*cos(theta);

I cannot figure out why this doesn't work